netdev - Re: [PATCH 12/13] forcedeth: fix irq clearing and napi spin lock changes

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Date:	Tue, 10 Mar 2009 05:32:56 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	aabdulla@...dia.com
Cc:	jgarzik@...ox.com, manfred@...orfullife.com, akpm@...l.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH 12/13] forcedeth: fix irq clearing and napi spin lock
 changes

From: Ayaz Abdulla <aabdulla@...dia.com>
Date: Thu, 05 Mar 2009 13:02:34 -0500

> This patch clears the irqstatus register with the exact same events it has read from it. Since the read-write operation is not atomic, a new irqstatus bit could have been set in between these operations and would then be cleared accidentally.
> 
> Secondly, we now don't need any spin lock protection when scheduling/completing napi poll as the isr will not execute anymore (as we turn off all interrupts now).
> 
> Signed-off-by: Ayaz Abdulla <aabdulla@...dia.com>

Applied.
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